congratulations. 22 first-time skipping. congratulations bill. >> reporter: now ladies and gentlemen the one you've been waiting to see, the current guiness book world record holder, russ "rock bottom" buyers. >> oh, man. >> reporter: the crowd was hushed as mighty russ took stone in hand. and then skipped it out and out across the allegheny. >> what guiness book record holders are all about, look at that. >> look at that, folks. 39! a 39! >> reporter: but as the cheering subsided, an unassuming unheralded young man slips out of the crowd and steped to the riverbank. and then fly a mighty heave. >> where did that come from? where did that come from? >> reporter: the shocking 42 skipper came from one grant mitchell. >> a new leader came out of nowhere. >> reporter: a philadelphia med school student who sped five-and-a-half hours across the state, arrived five minutes before competition, and had to borrow rocks. a miraculous tale. a young man hailing a goliath with a single stone. a deed for which david received a central plac